NOVBMBBB 7, 1912. 



The Florists' Review 



13 



The ammonia gas circulates above the 

 storage boxes and through the tanks 

 of brine, and back to the machine. 

 "We start the motor when the tem- 

 perature in the box has risen to 48 

 degrees," said H. E, Wendland, in 

 speaking of the simplicity of operation. 

 "The temperature at once begins to 

 fall, and we shut off the power when 

 42 degrees is reached. The tempera- 

 ture keeps going down to about 38 

 degrees, and then it starts slowly to 

 rise again. In from eighteen to 

 twenty-two hours, depending on the 

 weather and the number of times the 

 doors are opened, the temperature of 

 the boxes will be back to 48 degrees, 

 and we start the motor for another 

 short run. ' ' 



The illustration of the Wendland & 

 Keimel establishment, prepared from 

 recent photographs, includes the re- 

 frigerating machine and the cut flower 

 boxes. The following technical de- 

 scription of the apparatus was sup- 

 plied by the manufacturer, the United 

 Refrigerating & Ice Machinery Co., 

 Kenosha, Wis., supplemented by some 

 practical operating notes by Mr. 

 Keimel. 



Technical Description of Apparatus. 



The apparatus is of what is known 

 as 3-ton capacity. The first illustration 

 is of the compressor, together with the 

 motor, in this instance situated at the 

 back of the box, which latter may be 

 plainly seen at the right. The com- 

 pressor is of the two-cylinder, vertical 

 type, having a stroke of five and one- 

 half inches. It weighs 1,700 pounds 

 and is driven by a five horse-power 

 motor, which is larger than is needed. 

 The compressor is of the splash system 

 type of self-lubrication, the oil being 

 contained in the enclosed crank case, 

 where it is agitated by the motion of 

 the crank shaft and thrown on the 

 various moving parts, keeping them 

 constantly covered with a film of oil. 

 A gauge shows the amount of oil in 

 the crank case. A self-oiling ring dis- 

 tributes oil over the pillow-block or 

 out-board bearing. 



"On the rear wall of the box, to 

 the extreme right of the illustration, 

 can be seen the condenser. It is of 

 the double pipe type and counter cur- 

 rent construction, built of 1^-inch and 

 2-inch selected wrought iron ammonia 

 pipe. It consists or an outer tube, 

 containing ammonia, and an inner tube 

 through which the water is circulated, 

 these pipes being arranged in a coil 

 with fittings on the ends, with the inner 

 water tube passing through the end 

 fitting of the outer tube, and returning 

 in a similar manner through the next 

 pipe below. This gives a continuous 

 passage from top to bottom for the 

 ammonia gas, and a reverse continuous 

 passage for the water from the bottom 

 to the top. As the hot gas enters the 

 condenser where the water leaves, and 

 the cold water enters where the am- 

 monia leaves the condenser, a perfect 

 exchange of heat units is effected. 



"To bring the temperature of the 

 box down to the required degree it is 

 necessary to operate the compressor 

 only three hours a day in the winter 

 and five hours in summer. An even 

 temperature is maintained by means of 

 two tanks containing calcium brine, 

 placed inside the box. 



' * The second photograph is of the 

 box taken from the shipping room and 

 showing one of the doors open. The 

 box measures 11x20 and is eleven feet 



Befrigerating Apparatus of Wendland & KdmeL 



high. It is divided into two chambers, 

 either of which may be operated inde- 

 pendent of the other by the mere open- 

 ing or closing of a valve. Above the 

 door can be seen a smaller one which 



gives access to the tanks mentioned 

 above. These brine tanks are occupied 

 and surrounded by a series of coils 

 which carry the ammonia gas from the 

 compressor. 



The Gx>Iing Roonu that arc Artificially Befrigerated. 



